Tamil Nadu Governor K Rosaiah paid floral tributes to the portrait of Gandhi and administered the anti-terrorism day pledge to officers and staff at Raj Bhavan, an official release here said.
At the state Congress headquarters Sathyamurthy Bhavan, TNCC president B S Gnanadesikan led party supporters in remembering the former Prime Minister.
He later said in a statement that the usual pratice of the Chief Minister administering the pledge for state government staff at the Secretariat was 'cancelled', adding that the government should explain why it was not done.
In neighbouring Puducherry, Chief Minister N Rangasamy led the Union Territory in remembering Gandhi.
Rangasamy administered the "anti-terrorism pledge" while leaders of Hindu, Christian and Islam religions read out the highlights of scriptures of their respective faiths. Students presented devotional songs.
Members of different wings of the opposition Congress led by PCC Chief A V Subramanian and senior leader V Narayanasamy took out a procession from the party office before paying tributes to the leader.
Earlier Narayanasamy paid floral tributes at the portrait of Rajiv Gandhi and recalled his services to the nation at a function on the premises of the Congress Committee office in the town.